Cable mounting for scrapers or graders



Oct. 20, 1953 H. H. WASHBOND CABLE MOUNTING FOR SCRAPERS OR GRADERS 2Sheets-Sheet l )riginal Filed April 21, 1945 MHz 2.212272 f/nee WAsaga/v0 Oct. 20, 1953 H. H. WASHBOND ,7

CABLE MOUNTING FQR SCRAPERS OR GRADERS Original Filed April 21, 1945 2Sheets-Sheet 2 M; mww flag Patented Get. 20, 1953 CABLE MOUNTING FORSCRAPERS OR GRADERS Harry H. Washbond, Springfield, 111., assignor toThe Baker Manufacturing Company, Springfield, Ill., a corporation ofIllinois Original application April 21, 1945, Serial No. 589,592.Divided and this application October 6, 1949, Serial No. 119,869

6 Claims.

This invention relates to a cable mounting for implement blade-equippedmachines, such as bulldozers, angledozers, snowplows and the like.

Specifically, this invention relates to a cable sheave mounting on animplement blade that is so arranged as to guide the cable for exerting adirect pull to raise and lower the blade.

This application is a division of my copending application entitledScraper or Grader, Serial No. 589,592, filed April 21, 1945 now PatentNo. 2,503,929, issued April 11, 1950.

Because of the disclosure in the parent application, Serial No. 589,592,this invention will be hereinafter pecifically described as embodied inan angledozer, but it should be understood that the principles of thisinvention are generally applicable to cable sheave mountings for anydesired usage. In accordance with the preferred embodiment of thisinvention, the blade frame of an angledozer is raised and loweredrelative to the tractor on which it is mounted by means of awinch-actuated cable. A winch is mounted on the rear end of the tractorand a cable passes from the winch through a tube overlying the tractorand supported at its rear end by an upright frame and at its front endby a saddle or frame. The saddle at the front end carries a sheavereceiving the cable from the tube. The blade frame has a cross beam inthe front of the tractor carrying a universal joint midway between thepush beams of the frame. A rigid sheave-carrying bar has one end thereofsupported by a universal joint and the other end thereof rotatablycarrying a sheave for receiving the cable. The end of the cable isanchored to the front saddle. A leaf spring is provided for urging thebar into upright position so that the sheave on the bar will not becomefouled when the cable is slack. The bar carries the sheave at a levelabove the top of the blade, so that this sheave can be brought intocontact with the saddle-carried sheave when the blade is in maximumelevated position. The universal joint permits the bar-carried sheave toswing so that the sheave thereon will always be in direct alignment withthe saddle-carried sheave.

It is, then, an object of this invention to provide a universaljoint-carried sheave arrangement for a cable-actuated scraper blade thatprovides for a direct pull on the blade frame in all positions of theframe.

A further object of the invention is to provide a sheave arrangement forcable-operated implements on tractors or the like including aselfaligning sheave that eliminates possible fouling of the cable.

A specific object of the invention is to provide the implement frame ofa tractor-mounted dozer or the like with a cable-receiving sheaveconnected thereto through the media of a universal joint and havingspring means urging the sheave in an upright position relative to theframe.

Another object of the invention is to provide a dozer frame with acable-connecting means that can swing independently of the blade frameand control the position of the cable for a direct pull on the frame.

Other and further objects of the invention will be apparent to thoseskilled in the art from the following detailed description of theannexed sheets of drawings which, by way of a preferred example,illustrate one embodiment of the invention.

On the drawings:

Figure 1 is a side elevational view, with a part broken away and shownin vertical cross section, of a cable-actuated angledozer embodying acable mounting in accordance with this invention.

Figure 2 is a fragmentary front end elevational view of the angledozershown in Figure 1, with a part of the blade broken away to showunderlying parts.

Figure 3 is a fragmentary, somewhat diagrammatic, rear end elevationalview of the tilting blade mounting illustrating the blade in horizontalor uncooked position, and the self-aligning sheave in vertical position.

Figure 4 is a view similar to Figure 3 but illustrating the blade incocked position, and showing how the self-aligning sheave remains invertical position.

Figure 5 is a vertical cross-sectional view, with parts in elevation,taken substantially along the line VV of Figure 2.

Figure 6 is a fragmentary rear elevational view -taken substantiallyalong the line VI-VI of Fig ure 5. i

As shown on the drawings: In Figures 1 and 2, the reference numeral Illdesignates generally a tractor having a main 3 body portion l l, atractor track frame [2 on each an axle bracket I1.

- -;thereon. Handles, such as H, operate clutches 3 and brakes (notshown) for selectively driving and braking the winder drum. A sheave Weis rotatably mounted above the drum 18a to receive a cable 6- fromthed-rum;

A U-shaped. blade; carrying frame. 20 is .pro vided for the angledozerblade B. This frame has side push beam arms 20a and a cross arm.

20b. The side arms 20a straddle tracks [3 and the cross arm 201) extendsacross the front of the tractor body I I.

The blade B is pivotally mounte'dmidwaybetween its ends on a verticalpin; 21- which as, best shown in Figure 5, is carried by a bracket.222011 the cross arm 20b. The blade B can. thus be swung about avertical axis into selected angledoze and bulldoze positions.

The ends of the blade B are pivotally connected on vertical pivot pins23 to struts 2i which are adjustably anchored on the side push beam arms20a along the lengths of these arms by means of. anchor pins 25. Thestrutshold the blades B in adjusted position on the center pivot 2|.

The: axle brackets 17 of the tractor, as shown in Figure 3, have stubshaft brackets 25 bolted thereon by means of bolts 21. Each stub shaftbracket-25 has a stub shaft portion 26a projecting outwardly from thetractor in line with the axle I6.

Push beam brackets 28 each have a cylindrical bearing portion 28apivotally mounted on each stub shaft 26a together with an arcuateupstand-- has a plurality of holes 34 therethrough spaced along thelength thereof and intersecting the.

groove 29-.

The push beam arms 200. have upstanding arcuate flanges 32 integrallya-fiixed on the. rear ends thereof and these flanges are struck from thesame radius as the groove 29 and are. adapted to project into the grooveto be fully bottomed on the abutment wall end thereof. The flanges 32are longer than the flanges 28b of the push beam brackets 28 but theopen ends of the groove permit the ends of the flanges to project fromthe groove. The flanges 32 have holes 33 therein adapted to registerwith the holes 3| and locking.

pins 34 project through the aligned holes for adjustably' carrying theflanges in the grooves.

The frame 29, as illustrated. in. Figures 3 and 4,.

is tilted through a relatively wide range by selectively securing theflanges 32 of the push beams in the brackets 28. This tilting or cockingof the frame, in carrying the struts 24 and pivot pin 21 therewith, ofcourse, tilts the blade B throughout the same range. Since the tractortrack frames 12 oscillate about the axle l6, and since the push beambrackets are pivoted coaxially with this axle, the frame is notsubjected to any warping strains during independent oscillation. of thetractor track frames, as when the tracks move over the uneven ground. Atthe same time, how'- ever, the frame 20 can be carried in the selectedcooked or tilted position, and will remain in this position relative tothe axle it. Thus the frame 20 is adjustably cocked or tilted relative'to the axis of the axle 'of the tractor but, when so adju'sted, thename remains the same angular relation relative to the axle and willcarry the blade in response to the positions assumed by the axle inoperation of the tractor.

As best shown; in Figure thevbracket 22 on the cross. beam 2% of theframe carries a universal joint 31 composed of upstanding ears 3161. onthe bracket 22, a first pin 31b pivoted on the ears 37a and pivotallycarrying a joint memher. We which is pivoted by a second pin 31d to ears31c on the lower end of a bar 38. The bar 38. can. thus. tilt in alldirections relative to the frame 20 but: is held against rotationrelative to the frame.

A sheave frame 39 is secured on the upper end ofthe bar 33 and a pair ofsheaves 43 is rotatably mounted in. the frame 39 in side by siderelation as shown in Figures 2 to 4.

A leaf-spring 41, best shown in Figures 5 and 6, is pivotally mountedfor limited sidewise swinging: movement on the. cross. beam 20b. Theleaf spring. 41: has a. bottom end portion held against the vertical.wall of the beam" 2th by means of a.

bracket 42 bolted onthe beam by. means of. bolts 3 43 and carrying apivot pin 24 which projects through the spring and beam. The pin. 4:4.is.

welded to the bracket 12-. The bracket 42 has an. offset. portion 42areceiving-v the spring 4| therein and accommodating limited swinging.

movement of the spring.

The upper end of the; spring is. embraced by a strap 65 secured on thebar 38. and having inner rocking faces 45a to accommodate rockingmovements of the leaf spring relative to thebar 38..

' The leaf spring 13! is slidable through the strap 45 the bar 38 intoupright position toward theblade -B butv permits rearward swinging ofthe bar as.

shown. in dotted lines. As: shown in Figure 6, the pivotal mounting ofthe spring and the arcuate rocking faces 45a, of the strap 45 permitsthe frame beam 201) to tilt without tilting the bar 38.

The bar. 38 carries the sheaves 40 above the top of the. blade B for apurpose to be hereinafter described- Thetop of the sheave frame 39 hasan abutment block 3911 secured thereon for a purpose to. be morefully'hereinafter described.

As best shown in Figures 1 and 2, the sides of the body I I: havebrackets 46 secured thereon nearthe front end of the body. Thesebrackets carry pins 41.. A U-shaped frameor saddle 50 has sidearms 50a.straddling thetractor body and a cross arm 50b overlying the tractorbody. The bottom ends of the arms 50a have flanges 5| secured thereonextending into the brackets 46 and pivotally carried by the pins 4-1.Braces such as 5-2 are pivotally secured to the brackets such as 53 onvthe side arms 50a and are anchored on the body H rearwardly from thebrackets 46 to hold the; saddle frame 5!] in upright forwardly inclinedposition.

A sheave block or frame 54 is'flxedly carried by the cross arm 50b ofthe saddle frame 50 and projects forwardly of the tractor body as bestshown in Figure 1. This sheave frame 5 t rotatably supports a pair ofsheaves 55 (Figure 2) in side by side relation. An abutment block 54a isprovided at'the bottom of the frame 54 for opposing the block 39a of theframe 39.

The cable C has the free end thereof anchored to a clamp 56 on the sideof the sheave frame 54. Thecable. is trained fromthis anchor 56' aroundthe firs'tsheave- 40 in the frame 39, thence around the first sheave 55in the frame 54, next around the second sheave 46 in the frame 39, andthence around the second sheave 55 in the frame 54.

A tube 57 is pivoted at 58 to the cross arm 5% of the saddle frame 58immediately behind the sheave frame 54 for receiving the cable from thesecond sheave 55. The rear end of the tube 5'! is pivoted at 59 to aframe 60 which is pivoted at 6| to the winch 18.

The cable C is directed around a sheave carried by the frame 60 andthence through the tube 57 to the second sheave 55 in the frame 54.

The bar 38 carrying the sheave frame 39 can tilt on its universal jointsupport so that the sheave-s 40 will always be aligned with the sheaves5-5 and the cable runs between these sheaves 45 and 55 cannot becomefouled. The abutment blocks 39a and 54a likewise will always be alignedand, in the event that the blade is raised to its maximum height, nodamage will be done to the sheaves because the abutment blocks will bethe first members to come together.

The sheaves 40 will not get fouled behind the blade B because the bar 38carries these sheaves at a level above the top of the blade. When thecable is slack, the spring 4| will hold the bar 38 in upright positionto prevent fouling of the cable runs. The spring, however, will flex topermit fore and aft movement of the sheave frame 39 such as occursduring raising and lowering of the frame 20.

From the above descriptions it will be understood that this inventionprovides a cable mounting for a cable actuated scraper blade assembly ona tractor or the like wherein the blade can be cocked relative to thetractor without straining any of the parts and wherein the cable is soguided as to have a direct pull on the blade.

It will be understood that modifications and variations may be effectedWithout departing from the scope of the novel concepts of the presentinvention.

I claim as my invention:

1. In a cable actuated implement frame for a tractor or the like, auniversal joint carried by said frame, a rigid bar carried by saidjoint, a sheave frame on said bar, a leaf spring having one endpivotally carried by said frame and the other end acting on said bar,.astrap anchored on said bar embracing the other end of the leaf spring,said leaf spring urging said bar into upright position, and saiduniversal joint allowing swinging movement of the sheave frame relativeto the implement frame to provide for a direct pull of the cableirrespective of the tilted position of the implement frame.

2. In a tractor mounted cable operated dozer assembly including atiltable blade frame, a cable for raising and lowering said frame, acable guide on the tractor for said cable, and means for cocking theblade frame transversely of the tractor, the improvements of a barmounted on the blade frame and projecting thereabove, a cable guide onsaid bar receiving the cable from the cable guide on the tractor, and ajoint between the bar and blade frame accommodating tilting movements tomaintain the bar mounted cable guide aligned with the cable guide on thetractor irrespective of the tilted or cocked position of the frame onthe tractor, said joint including a joint member pivotally mounted onsaid frame for movement about a generally horizontal axis, and means onsaid joint member pivotally mounting the bar for movement about an axistransverse to said horizontal axis and transverse to the longitudinalaxis of the bar.

3. A cable mounting for a blade frame which comprises a bar, meanspivoting the bar on the upper end of the frame and limiting rotation ofthe bar about its longitudinal axis, a sleeve rotatably mounted on thefree end of the bar, and resilient means urging the bar into an uprightposition to maintain the sheave above the blade while accommodatingrelative tilting of the blade frame and bar.

4. A cable mounting for a blade frame, comprising, a bar, means pivotingthe bar on the frame and limiting rotation of the bar about itslongitudinal axis, a sheave rotatably mounted on the free end of thebar, and a leaf spring having one end connected to the frame, the otherend thereof urging the bar into an upright position to maintain thesheave above the blade While accommodating relative tilting of the bladeframe and bar.

5. A cable mounting for elevating and lowering of a tractor blade frameor the like movable about two transversely related generally horizonalaxes, comprising: a joint member pivotally mounted on the frame formovement about an axis parallel to one of said axes, a bar pivotallymounted at one end on said joint member for movement about an axisparallel to the other of said axes, a sheave mounted on the other end ofsaid bar, and resilient means urging said bar into an upright position.

6. A cable mounting for a tractor blade frame or the like mounted forelevating and lowering movement about one horizontal axis and forlimited movement about a second horizontal axis transverse to said onehorizontal axis, comprising: a sheave universally mounted on said frame,a leaf spring upstanding from said frame, means connected to said sheaveand embracing said leaf spring for resiliently resisting rotation ofsaid sheave about an axis parallel to said one horizontal axis, andmeans mounting said leaf spring on said frame for limited pivotalmovement of said sheave about an axis parallel to said second horizontalaxis.

HARRY H. WASHBOND.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,066,683 Truesdell July 8, 1913 1,637,290 Ayers July 26, 19271,816,701 Sayers July 28, 1931 2,182,712 Vogel Dec. 5, 1939 2,275,390Lawler Mar. 3, 1942 2,376,181 Petersen et al May 15, 1945 2,408,268Peterson et a1 Sept. 24, 1946

